Patent US1962754A successfully refreshed from Google Patents.
Patent US1593157A successfully refreshed from Google Patents.
US4223641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas boiler control
Assignee: Rendamax BV
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Filing: 1978-07-07
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Granted: 1980-09-23
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Expires: 1998-07-07
Abstract
Abstract A gas-fired boiler installation with control of the supply of combustion components, provided with a combustion space that upwardly is in communication with a boiler flue and at the bottom side is confined by a burner bed with atmospheric burners having interposed venturi tubes which upon throughflow by the gas controllably supplied via a valve, draw in primary air. Between the elements of the burner bed, from the bottom side thereof, secondary air can be drawn into the combustion space while the secondary air is controllable in conjunction with the control of the gas supply by a control valve.
Inventors
- 👤 Louis H. Widdershoven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:25
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/60; F23N; F23N1/00; F23N1/02; F23N1/027
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
181 words
A gas-fired boiler installation with control of supply of combustion components comprising, in combination: a boiler flue; combustion space that upwardly is in communication with said boiler flue, the bottom side of said combustion space being confined by a burner bed having atmospheric burners horizontally positioned with interposed venturi tubes, which upon throughflow by the gas controllably supplied via a single valve, draw in primary air, and wherein, between the elements of the burner bed, from the bottom side thereof, secondary air can be drawn into the combustion space; and control means for variably controlling supply of secondary air in conjunction with variably controlling gas supply control, said control means for controlling supply of secondary air in conjunction with gas supply control including control adjustment means for said gas valve through which the gas is supplied, control adjustment means for a control valve for the secondary air and a driving unit, each of said control adjustment means being connected to said driving unit; whereby excess of air upon loads smaller than those at maximal capacity and their cooling affects are avoided.
Claim 2
Dependent Claim
181 words
A gas-fired boiler installation with control of supply of combustion components comprising, in combination: a boiler flue; combustion space that upwardly is in communication with said boiler flue, the bottom side of said combustion space being confined by a burner bed having atmospheric burners horizontally positioned with interposed venturi tubes, which upon throughflow by the gas controllably supplied via a single valve, draw in primary air, and wherein, between the elements of the burner bed, from the bottom side thereof, secondary air can be drawn into the combustion space; and control means for variably controlling supply of secondary air in conjunction with variably controlling gas supply control, said control means for controlling supply of secondary air in conjunction with gas supply control including control adjustment means for said gas valve through which the gas is supplied, control adjustment means for a control valve for the secondary air and a driving unit, each of said control adjustment means being connected to said driving unit; whereby excess of air upon loads smaller than those at maximal capacity and their cooling affects are avoided.
Claim 3
Dependent Claim
36 words
An installation according to claim 1, wherein admission passage for the primary air in the burner bars and admission passage for the secondary air flowing along the exterior of the burner bars are entirely separated passages.
Claim 4
Dependent Claim
44 words
An installation according to claim 1 or 2, wherein said control adjustment means for a control valve for the secondary air comprises a control valve which is adapted for shutting off and releasing the bottom side of the space accomodating the gas burner bed.
Claim 5
Dependent Claim
19 words
An installation according to claim 3, wherein the control valve is a substantially horizontal valve movable up and down.
Claim 6
Dependent Claim
52 words
An installation according to claim 1 including two shafts, adjustment of said control valve and of said gas valve being responsive to the position of said two shafts which are coupled to said driving unit, the one operating said gas valve and the other the said control valve for the secondary air.
Claim 7
Dependent Claim
41 words
An installation according to claim 1, including means for varying the ratio between the transmission ratio of said driving unit to said gas valve relative to the transmission ratio of said driving unit to said control valve for the secondary air.
Claim 8
Dependent Claim
32 words
An installation according to claim 1, including means for varying the transmission ratio of said driving unit to at least one of said gas valve and said control valve for secondary air.
Claim 9
Dependent Claim
24 words
An installation according to claim 7, wherein said means for varying comprise at least one lever and rod assembly for driving said control valve.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-23 | 1984-03-24 | 1984-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-23 | 1988-03-24 | 1988-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-23 | 1992-03-24 | 1992-09-23 | $7700.00 | Window Closed / Lapsed |